LC89052TA-E SANYO [Sanyo Semicon Device], LC89052TA-E Datasheet - Page 24

• Manufacturer Part Number: LC89052TA-E
• Description: Digital Audio Interface Receiver
• Manufacturer: SANYO [Sanyo Semicon Device]

8.7 User General Definable Output Port (
•
• Selection is done by GPISEL. The initial setting is set to the microcontroller interface register GPIDAT. However, the
8.7.1 Microcontroller interface register output (Example of signals that control low power of optical module)
• This section describes an example in which
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UGPI pin is a user-definable output port that can be selected for the following functions.
—Microcontroller interface register output
—Signal output during clock switching transitional period
initial setting of this GPIDAT register is "1", so high level is output from the
microcontroller interface register output.
(a) Connect the
(b) After a reset due to
(c) After a reset, the initial value of GPIDAT is set to "1", so H is output from
(d) The application must set GPIDAT to "0" to have the optical module supply data. That is, the
the default GPIDAT value is output.
control switch is turned off, and data is not supplied from the optical module.
controlled with GPIDAT, and the current drain can be minimized when the optical module is not used.
Figure 8.12
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UGPI output to the power supply control switch of the optical module.
PD, microcontroller interface register output is selected as the initial state of
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LC89052TA-E
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UGPI Output Example (Power supply control signal for an optical module)
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UGPI is used as a power supply control signal for an optical module as a
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UGPI )
UGPI
RXIN
LC89052TA-E
Optical receiver
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UGPI pin.
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UGPI . Therefore, after a reset, the
module
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UGPI output can be
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UGPI . As a result,
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